728794120 has 32 divisors (see below), whose sum is σ = 1655121600. Its totient is φ = 288791488.

The previous prime is 728794117. The next prime is 728794133. The reversal of 728794120 is 21497827.

It is a super-2 number, since 2×728794120² = 1062281738693148800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80860 + ... + 89419.

It is an arithmetic number, because the mean of its divisors is an integer number (51722550).

Almost surely, 2^728794120 is an apocalyptic number.

It is an amenable number.

728794120 is an abundant number, since it is smaller than the sum of its proper divisors (926327480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728794120 is a wasteful number, since it uses less digits than its factorization.

728794120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170397 (or 170393 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 728794120 is about 26996.1871381868. The cubic root of 728794120 is about 899.9152677431.

The spelling of 728794120 in words is "seven hundred twenty-eight million, seven hundred ninety-four thousand, one hundred twenty".